[3.15] gh-154283: Make threading.get_native_id() unique across processes on DragonFly (GH-154287) (GH-154293)
serhiy-storchaka <[email protected]>
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https://github.com/python/cpython/commit/387f7cd81d285ca9ed9a95b2376a2290a3241f20 commit: 387f7cd81d285ca9ed9a95b2376a2290a3241f20 branch: 3.15 author: Miss Islington (bot) <[email protected]> committer: serhiy-storchaka <[email protected]> date: 2026-07-20T20:20:57Z summary: [3.15] gh-154283: Make threading.get_native_id() unique across processes on DragonFly (GH-154287) (GH-154293) On DragonFly BSD lwp_gettid() is only unique within a process (the main thread is always LWP 1), so combine it with the process id, like Solaris. (cherry picked from commit 53597df11e2d9f01ade2529c147df24b49685878) Co-authored-by: Serhiy Storchaka <[email protected]> Co-authored-by: Claude Opus 4.8 (1M context) <[email protected]> files: A Misc/NEWS.d/next/Library/2026-07-20-21-36-40.gh-issue-154283.Xip7xE.rst M Python/thread_pthread.h diff --git a/Misc/NEWS.d/next/Library/2026-07-20-21-36-40.gh-issue-154283.Xip7xE.rst b/Misc/NEWS.d/next/Library/2026-07-20-21-36-40.gh-issue-154283.Xip7xE.rst new file mode 100644 index 00000000000000..a278d67e1824d5 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2026-07-20-21-36-40.gh-issue-154283.Xip7xE.rst @@ -0,0 +1,2 @@ +On DragonFly BSD, :func:`threading.get_native_id` now returns a value that is +unique across processes, matching the other platforms. diff --git a/Python/thread_pthread.h b/Python/thread_pthread.h index 8496f91db2eec2..de93178576e6ec 100644 --- a/Python/thread_pthread.h +++ b/Python/thread_pthread.h @@ -399,8 +399,8 @@ PyThread_get_thread_native_id(void) lwpid_t native_id; native_id = _lwp_self(); #elif defined(__DragonFly__) - lwpid_t native_id; - native_id = lwp_gettid(); + // lwp_gettid() is only unique within a process, so combine it with the pid. + unsigned long native_id = (unsigned long)getpid() << 32 | lwp_gettid(); #elif defined(__sun__) && SIZEOF_LONG >= 8 unsigned long native_id = (unsigned long)getpid() << 32 | thr_self(); #endif _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3//lists/python-checkins.python.org Member address: [email protected]